Helicity Amplitudes for Charmonium Production in Hadron-Hadron and Photon-Hadron Collisions
M. M. Meijer, J. Smith, W. L. van Neerven
TL;DR
This paper calculates helicity amplitudes for charmonium production via gluon-gluon and photon-gluon interactions in various collision scenarios, providing essential theoretical inputs for understanding quarkonium production mechanisms.
Contribution
It introduces explicit calculations of helicity amplitudes for both color singlet and octet charmonium states in polarized and unpolarized collisions, advancing theoretical modeling.
Findings
Explicit helicity amplitudes for color singlet and octet states
Applicability to polarized and unpolarized collisions
Provides foundational data for experimental analysis
Abstract
We present the gluon-gluon and photon-gluon helicity amplitudes for color singlet and octet charmonium production in polarized and unpolarized hadron-hadron and photon-hadron collisions.
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